<u>Answer:</u> All the flasks contain same number of molecules.
<u>Explanation:</u>
STP conditions are called as standard temperature and pressure conditions.
At this condition, 1 mole of a gas occupies a volume of 22.4 L
Also,
The temperature at this condition is taken as 273.15 K and the pressure at this condition is taken as 1 atm.
According to mole concept:
1 mole of a gas occupies number of molecules
We are given:
Three different flasks having three different gases at STP
So, all the flasks will have same number of molecules that is
Hence, all the flasks contain same number of molecules.
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Answer:
c. abc₃
Step-by-step explanation:
1. a atoms
There are eight corners, each containing an a atom.
No. of a atoms = 8 × ⅛
No. of a atoms = 1
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2. b atoms
There is one central b atom.
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3. c atoms
There are six faces, each containing a c atom.
No. of a atoms = 6 × ½
No. of c atoms = 3
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4. Formula
The simplest formula is abc₃.
Mole = mass / molar mass
123/138.6 = 0.8874
Mr=
K - 39.1
Cl- 35.5
O4 - (16x4= 64).
39.1+35.5+64 = 138.6
Barium, it's an earthy alkaline metal it's atomic number is 56